Is this anything?

[Convict2161]

About 3 days in tank. The backside of one rock has about 20 of these little patches.



View attachment 70830



View attachment 70831

 

[Sniperhank]

Hard to tell. Maybe a sponge starting off.

 

[Convict2161]

Hard to tell. Maybe a sponge starting off.

Ok thanks. Nothing to be concerned about, right now anyway. I just hear horror stories of what comes out of live rock.